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- #include<stdio.h>
- #define CUBE(n) n*n*n
- int armstrong(int n);
- int prime(int n);
- int main()
- {
- int n,i;
- printf("\nEnter number ");
- scanf("%d",&n);
- if(armstrong(n))
- {
- for(i=1;i<=n;i++)
- if(prime(i))
- printf("%d ",i);
- }
- else
- printf("\nNot Armstrong ");
- printf("\n");
- }
- int armstrong(int n)
- {
- int temp=n,t,sum=0;
- while(n)
- {
- t=n%10;
- sum+=CUBE(t);
- n=n/10;
- }
- if(sum==temp)
- return 1;
- return 0;
- }
- int prime(int n)
- {
- int i;
- if(n==1)
- return 0;
- if(n==2)
- return 1;
- for(i=2;i<=n/2;i++)
- if(n%i==0)
- return 0;
- return 1;
- }
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